A47B21/007—Tables or desks for office equipment, e.g. typewriters, keyboards with under-desk displays, e.g. displays being viewable through a transparent working surface of the table or desk

A47B21/0073—Tables or desks for office equipment, e.g. typewriters, keyboards with under-desk displays, e.g. displays being viewable through a transparent working surface of the table or desk liftable above the desk top